Block or tile press.



PATENTED NOV. 27, 1906.

L. N. MCGARTER.

u 0 m T? m m W l w/ PATENTED NOV. 2'7, -1906.

L. N. MGGARTER,

BLOCK OR TILE PRESS. APPLICATION FILED*SEPT. 22, 1:904.

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' PATBN-TED Nov, 27, 1906.

L. N. MQGARTER.

BLOCK 0R TILE PRESS. APPLICATION FILED SEPT. 22, 1904.

4 SHEETS-SHEET 4- h1- mm fnvenior': Louis 1W MoCarZeg: by

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i l l i LOUIS NQMGOARTER. OF XOB-RISTOIYN BOROUGH, PENNSYLVANIA PATENTOFFICE.

ASSIGNOR TO THE INTERNATIONAL PAVEMEIT COMPANY, OF HARTFORD,CONNEOTICLTT, A L'TORPORATION OF CONNECTICUT.

BLOCK OR TILE PRESS.

nots'szaas.

To all whom, it ntmy cancer/1,:

Be it known that 1, Louis N. MCCARTER,

a citizen of the United States, residing in the borough of N orristown,county of Montgomcry, and State of Pennsylvania, have invent- ,ed anImprovement in Block or Tile Presses, 'of-which the followingdescription, in conan improved machine or press for compressingasphaltioor other blocks or tiles for paving and other purposes. e

The various features of the invention will be moreclearly understoodfrom a descriptionof the best embodiment of that inven- .tionnow knownto me and illustrated in the accompanying drawings. fiReterring to saiddrawings, Figure 1 is a ,side elevation of the press referred to. Fig.

Zis a plan view thereof with the compressionhead and feeding-neckremoved; Fig. 3, a vertical longitudinal section of Fig. 1 Fig. 4,

a vertical 'crosssection on the irregular dot-- ted line 4 I, Fig. 3;Figs. 5 and 6, detail views illustrating the positions of parts atdiii'erent stages of the operation of compressing a block; Fig. 7,details showing the cam-rollers for shifting the moldblo'ck; Fig. 8, adetail illustrating the auxiliary means for. supporting the mold-blockfollowing the action of the lifting-cams thereon, and Fig. 9 a detailshowing one of the friction devices employed and to-be described.

The: press shown in the accompanying drawings and selected forillustration of my invention is adapted for compressing what arecommonly known as -asphalt pavingblocks, the composition of whichcomprises crushed and partly-pulx eri'zed stone, fines, and acemeutitious asphaltic binder.

In the particular press illustrated the asphaltic or block compositionis conducted from the mixing or preparing apparatus to the pressthroughasuitable steam-heated neck A to keep the composition at a properconsistencyduring its passage to the coin- .pressing-mold. Thissteam-heated neck is Shown as composed of opposed castings a a,

flanged and secured one to the other in suit 'gabletmanner and eachseparately cored or 'cham'beredto form one or 1nore,st'eam-cliamSpecification of Letters Patent.

Application filed September 22, 1904. denial No. 225,424.

Patented Nov. 27, 1906.

one or more inlets-a and exhausted through one or more outlets c Theinterior passage for the materials within this neck is made taperingfrom top to bottom or from the inlet to the outlet ends thereof .toenable the .material to gravitate freely therethrough.

The nature of any composition containing asphaltic or equivalent cementis such that it will easily clog and pack unless some provision is madeto clear it while in transit This chambered neck rests upon and issecured to the compression-head B; which ex.- tends transversely of themachine (see Fig. 4) and rests at its ends upon the side, frames 2) b,which in turn are bolted upon the bedplate 6, Figs. 1 and 4.

The compression-head 'B (see Figs. 1 and 3) has extended fromone hereinits right side a ulcrum-arm b notched at its outer end to rest upon thefulcrum-support 1), carried by a ,s;tandard b, erected upon the bedplateI). This compression-head B is held down in normal position upon the suporting side frames 6, described by two long olts 6 (see Figs. 1' and 2,)which depend through the bed-plate b and are fitted at their lower endswith eyes I), which en age the end 8 of hers into which steam isadmitted through a wristpin 0 carried at tie free end of a long loverI). The short end of this lever adjacent the wrist-pin I) is notched fora bearing upon the fulcrum-support]; (see Figs. 1, 3, and 4,) to whichit is tied for purposes of safety by the links I), Fig. 1. f'These'linksalso tie the bolts to its fulcrum to enable the lever to be moved in anopposite direction to lift the bolts, thereby to permit thecompression-head to be lifted when necessary for adjustment orotherwise.To furnish a yielding support for this lever and the compression-headand also a means for moving-the lever to move the bolts to free thehead, as

described, the long end of the letter is suspended from the piston-rodI) ofa'piston b in the vertically-arranged cylinder b, herein shown asattached to the fulcrum-standard b Figs. 1 and Steam or other suitable.lluid under pressure is admitted to the cylinder b above the pistontherein, I havin herein shown the inlet-pipe at b. fitted with suitablecontrolling-valve I). and a,reduc'- ing-valve 6 said pipe bein alsoprom'ded witha pressure-gage b". desired, said times below the pi e mayalso'be' providedwitharelief or sa ety valve b for the purposes ofsafety.

The condensation is taken care of by an out, let b Lleading from theside of the cylinder above the piston in the lowest osition of thelatter and'communicating wit a suitable trap device I).

From the bottom of the cylinder andat all piston therein leads anexhaust-pipe b, Fig. 1, which communicates with a branch b from thesupply-pipe b. Valves, however, are provided at b I), respectively aboveand below the junction of t e pipe I with the branch I), whereby withthe valve I) closed and the valve b en there isprovided a constantoutlet or rip for and at the bottom of said cylinder, and .whereby'alsowith the valve 1) closed and the valve b open live fluid under pressure'may be admitted to the cylinder below the piston therein to-lift' thesame positively and the bolts b as hereinbefore described. The purposeof this fluid-pressure su port of the compression-head, as will more llyhereinafter ap ear, is to permit-of certain relief un der con itionswhich might otherwise cause damage-to the press.

The compression head is provided with a feeding-passage below andregistering with the stear heated neck A and communicating at the propertime with the mold m, Fig. 3, in the mold-block m, carried by thehorizontal carriage m mounted to slide fore and aft in the frame uponthe inturned flange-guidesm', Fig. 4*, upon the side frames b. At itsrear end at the r1ght,Figs. 1 and3, thiscarriage'm is provided with tworearwardly-eX-tended arms m, arranged one fiat-wise above the other andholding between and at their outer ends the vertical pin m (shown bestin Fig. 7) and keyed within the eccentric bushings m, which have theirbearings in the said arms m. The end of this pin ,m is squared orotherwise adapted to be rotated, thereby to rotate the said eccentricbushings and change the axial distance of the pin on fromthefeeding-neck in the com ression-head for urposesof adjustment. folponthis pin and between said arms m is mounted a yoke m, carrying at itsends the cam-rollers m which travel, respectively, in pr0per lyshapedpaths in the cams m". (See Figs. 2 and 3'.) These cams are fast upon'ashaft m journaled in suitable bearings in the side frames 1), rotationof said camscausing longi-f' tudinal' or fore-and-aft travel of themoldcarriage.- The bottom of the mold is constituted by avertically-movable plunger 0. With the carriage in its rearmost position(see Fig. 6) and with the plunger 0 in its lowermost position the blockcomposition may be fed ,by gravity or otherwise downward through theheated neck and compre sion-head' intoand to fill the mold. Rotation ofthe cams m then moves-the carriage forward or to the left into theposition shown in Fig. 3, cutting off the supply of blockcompositionand'placing the mold directly beneath the portion of the comression-block that lies at the left of the feeding-neck. The plunger 0is then lifted to compress the composition in the mold, as shown in Fig.3, against said compression-head, after which the plunger drops slightlyto relieve the block when said carriage is further moved to the left toa position to clear the compressed lock of the compression-head, afterwhich said plunger is again further'lifted to expel the compressed blockfrom and through the top of the said mold.'- With the plunger stillelevated the carriage is then returned to its original position, leavingthe compressed orted upon the top face of the block sup mold.bl oc butin front of the compressionhead, asshown in Fig. 5. Upon the nextsucceeding forward movement to the left in the drawingsthe compressedblock-upon the top of said mold-block will be carried far enough to theleft to be engaged by suitable feeding-out mechanism, (typified at F,Fig. 1,)

which removes the block from the press and places it preferably upon asuitable conveyer, which conveys it away water or other cooling mediumto set it to a condition for use.

Referring now to Fig. 3, the plunger 0 is supported upon a cross-head 0,mounted to move vertically in the carriage m said crosshead resting upona rectangular box-csising 0 which has a long horizontal bearing slot orway which receives the box 0 of the eccentrio 0, fast upon the mainshaft ,0 In the operation of the machine the eccentric, acting throughits box 0 and casing 0, lifts the cross-head 0 and plunger 0 "upcompress a block. The carriage is then moved to the left, Fig-3, thebox-casing sliding upon the elevated box, and continued rotation of themain shaft 0 causes a pair of lifting-cams 0,

' mounted thereon at opposite sides of the boxcasing, to engage suitableflanges or wings 0 upon the SldES'Of the cross-head 0 and lrft theplunger 0 above the compression positicin through a bodyof and to thee'ecting or discharging position (shown in Fig. 5) to eject thecompressed block from the mold. This arrangement permits the lifting ore ecting cams o to ?be made of desired shape and throw withoutinterfering with the powerful eccentric movement for exerting thecompressing pressure,-

high'as two'hundredwhich frequently runs as tons in a press for makingasphalt pavingblocks. In the press here shown the movement of theeccentric would permit the cross head and its plunger to drop for aconsiderable distance before the ejecting-camso would engage thecross-head 0', and'tolpre vent this I have provided a latch '11; 'w

slightlymerely enough 1611* catches the cross-head aft'eritjhas droppedto inensl c so as to permit the carriage to be moved freely forward intoblock-ejecting positionthis latch holding the cross-head until theejecting-cams engageit from beneath to further lift it to eject theblock. The latch l have shown is best illustrated in Figs. 3 and 8.

and consists of a plunger p, arranged to move horizontally in a cylinderp, with a spring 12 tending to move it normally to the left, where- IOit will project beneath and thereby support a bracket p adjustablymounted upon the cross-head 0' and having its position controlled bysuitable adjusting devices, (typified at p To remove the latch andpermit the I 5 release of theplunger, I have provided the latch with astem p connected at its outer end with an arm p fulcrumed at p andhaving its long end opposed to a tappetscrew 1), fast on the bed-plate bof the press. At or near the end of the return movement of the carriageto the right, Fig. 6, the long arm of this lever p engages thetappet-screw and removes the latch to permit the plunger and itscross-head when released by the ejecting.-

2 5 cams to drop past the latch upon the wedges w w, Figs. 3 and 6, thelongitudinal position of which determines the lowermost position of thecross-head, and therefore the depth of the mold prior to compression andthe vol- 0 ume of composition that is to be compressed into a block.These wedges may be adjusted longitudinally by suitable means, as theadjusting-screw w, connected by a sprocketchain w with a hand-wheel 'wconveniently 3 5 positioned for manipulation by the operator. To preventthe cross-head from dropping too readily from its elevated to itslowermost position supported upon the wedges w, I have provided thecarriage with suitable re- 40 tardingorfrictiondevices.(DetailedinFig.9)

These friction devices are here shown as disks (Z, pressed by thesprings (Z against the face of the cross-head where it slides in thecarriage. The tension of the springs d is ad- 5 justed in suitablemaimer, as by the adjusting-screws d To take up any shock that mightotherwiseresult from-thereciprocations of the cartriag'e m the latterisprovided' tsee Figs. 1 and 3) with a rearwardly-extended rod h,

which passes through the fulcrum-standard b at the right, Fig. 3, andhas suitably sup- POI'tGClIIPOH it and at opposite sides'of said supportthe cushion-springs h h, each ad- 5 5 justably supported upon said rodh. These springs are so adjusted that one or the other will becompressed just prior to the limit of movement of the carriage in eitherdirection,

thereby to take up any lost motion or shock and by their recovery toassist in starting said carriage upon its return movement.

The various shaft-s are-friven in suitable manner, herein as best shownin 2, where power is applied through usual fast and loose 6 '5 pulleys ee to a pulley-shaft 0 provided with a fly-wheel e and a pinion e, whichdrives a spur-wheel 6 fast on an intermediate shaft c. This intermediateshaft has a pinion e,

which meshes with and drives a large toothed wheel e on the main oreccentric shaft 0*, described. This main shaft 0 is provided also with aspur-wheel e, which drives a spurwheel e on the cam-shaft m described.

As will be understood from the foregoing description, in the operationof the press the block composition rests in a solid and heated column inthe feeding-neck A and passage in the compression-head supported uponthe mold-block m of the carriage m When the carriage reaches itsrearmost position with the plunger 0 down, the block composition fillsthe mold, after which the carriage is moved by cams m forward intoposition with the mold under the compression head, when the eccentric 0lifts the plunger and compresses the block. The movement of theeccentric relieves the presser slightly after compression and leaves thecross-head and plunger resting upon the latch 11, whereupon the carriageis further moved by its cams to the left to carry the compressed blockover/and clearof the compression-head, after which the ejecting-cams oengage the cross-head and lift thelatter away from the eccentricbox-casing to cause the plunger by itsfurther elevation to e'ect thecompressed block from the mold. T e carriage now begins its returnmovement, and the compression-head by preventing the discharged blockfrom folv lowing the carriage causes said block to-be pushed off ontothe mold-head in front of the mold, Where. it remains until uponcompletion of the next succeeding block it is moved to the left, asdescribed, with the carriage, to

be engaged by the feeding-out device F.

It will be noticed that the plunger ohas a fixed and invariable throw,so that theblock is always compressed to a given size, regardless of theconsistency or character of the composition within themold, provided, ofcourse, there is not too much variation in said composition.

For example, asphalticblock compositions are known to vary in"con-''sistency and in capacity to flow under -vary-- mg conditions oftemperature and the like,

so that under even the most careful handling more of the compositionwill at times enter the mold than at others, notwithstanding the mold atall times would appear to be completely filled. It will be noticed,however, that whatever the condition of the composition in the mold theplunger always rises to a given elevation and compresses the ma terialinto a block of a given size, whether that block be more or less dense,as the result of the mold containing more or less of the compositionthatis, within safe limits. To provide against damage to the press by thefilling of the mold with such a volume of the composition as cannotpossibly be cominto ablock of the required dimen sions, and thisoccasionally results under unusual conditions, the compression-head issupported by the long lever 6 under the press and the steam-filledcylinder I2 The ssure of steam in this cylinder is always sufiicient tohold the compression-head down against all safe pressures, so thatwithin'a the steam or fluid cushion through the medium of theleverarrangement shown a comparatively small cylinder with relatively lowstoam pressure may be employed and at the same time obtain greaterstability and freedom from undesirable fluctuations than 1 would bepossiblewere' the compression-head directly supported by thesteam-cushion member or piston. In place of the mechanical or leverconnection between the fluidcushion and the compression head I may useany other medium interposed between the fluid and the head which willserve to corn munica-te the pressure of one to the other,

either with or Without a multiplication herev scription herein.

in provided by the lever shown. I

' The mold and compression-surfaces are made detachable for renewal in amanner well known in the art and which needs no de- Ihe nature ofcompositions is such that unless the plungerface is properly lubricatedthe oompositlon,

after having been compressed under high pressure thereupon, will adherein greater or less quantities thereto and not only clog the plunger, butproduce defective blocks. While in a press of the character shown thistendency is reduced to a minimum because the block is removed fromoflthe top of the plunger by a shearing action as the carriage returnsbeneath the compression-head, nevertheless it is desirable to providefor convenient means for lubricating the top of the plunger. I haveprovided for this in the resent machine by eft face, Figs. 1 and 3, ofthe compressionhead B a spout or plate s, which is screwed toconstantly-changing the front face of the head and which furnishes theactive face which engages near the block and pushes the latter off fromthe top of the plunger as the carriage retreats under the head. As thecarriage retreats and this spout pushes off the block it leaves a narrowand portion of the top face of the plunger exposed at the bottom of thespent as the p lunger passes beneath it to its giving the operatoropporreanmost position,

through this spout and tun-ity to pourdown asphaltic and other similarattaching to the front or normally fixed arfabutment and a feeding-neck,an opposupon the plunger 1passing beneath it a lubricant, such as mg'tenWax, as often and in suchquantity asinay be necessary. Heretofore inpresses of this character, so far as known to me, it has been im ossiblefor the o erator to reach directly witli any lubricant t e face of theplunger, being obliged to pour the lubricant more or less promiscuouslyover and upon the mold face or block, trusting to chance for it to workdown upon the plunger-face.

I have here described my invention in its best embodiment now known tome; but said invention is not limited to the particular embodimentdisclosed, as said invention 0bvi ously may be varied Without departingfrom the spirit and scope of the invention.

I claim v 1. In a ress of the character described, a normally iXedcompression-head comprising an abutment and a feeding-neck, and anopposing plunger having an unvarying range of .movement regardless ofthe pressure of the material acted upon.

2. In a ress of the character described, a normally 1 'edcompresslon-he'ad comprising an abutment and a feeding-neck, and anopposing plunger having an unvarying range of movement regardless of thepressure of the material acted upon, and means to aline said plungerfirst with-the feedmg-neck and thereafter with the abutment.

3. In a ress of the character described, a

normally fixed compression-head comprising an abutment and afeeding-neck, and an opposing plunger having an unvarying range ofmovement regardless of the pressure of the material acted upon and meansfor reciproeating said plunger transversely to the line of said range ofmovement.

4. In a press of the character described, a compression-head comprisinging plunger having an unvarying range of movement regardless of thepressure of the material acted upon, means for alining said plungerfirstwith the feeding-neck and thereafter with the abutment, meansforretracting said plunger just sufficiently to release the material frompressure and means to thereafter impart an ejecting movement to saidplunger.

5. In a press of the character described, a normally fixedcompression-head comprising an abutment and a feeding-neck, means forheating the material in said neck, an opposing plunger having anunvarying range of movement regardless of the pressure of thematerialacted upon, means for alining said plunger first With thefeeding-neck and thereafter with the abutment, means for retracting saidplunger just sufliciently to release the material from pressure .andmeans to thereafter impart an ejecting movement to said plunger.

1 6. a ress of the character described, a normally ed compression-headcomprising an abutment and a feeding-neck, an opposing plunger having anunvarying range of moveinent regardless of the pressure of the materialacted upon, means for alining said plunger first with the feeding-neckand thereafter with the abutment, means for retractsaid plunger justsufficiently to release the material from pressure, and a latch to holdsaid plunger in said retracted position.

7. In a ress of the character described, a normally ed compression-headcomprising an abutment and a feeding-neck, ano posing plunger having anunvarying range of move-. ment regardless of the pressure of thematerial acted upon, means for alining said plunger first with thefeeding-neck and therealfterwith the abutment, means for retracting saidplunger just sufficiently to "release the material from pressure andadjustable means to hold said plunger in said retracted position.

8. In a ress of the character described, a

normally ed compression-head comprising an abutment and a feedmg-nieck,an opposing plunger having an unvarying range of movegment regardless ofthe pressure of the material j acted upon, means for alining saidplunger first with said neck and then with said abutment and ositivepressure means connected with saicf head and adapted to maintain amaximum uniform pressure throughout the pressing action.

V 9. A press of the character described, comprising means to compress abody normally to given dimensions irrespective of the pressure requiredtherefor, and pressure-means connected therewith and adapted to maintaina maximum uniform pressure throughout the pressing action.

10. A press ofthe character described, comprising means to compress abodv normally to given dimensions, irrespective of the pressure requiredtherefor, and fluid-pressure means connected therewith and adapted tomaintain a maximum uniform pressure throughout the pressingaction.

11. A press of the character described, comprisingfa compression-headhaving an abutment and afeeding-nck and means to compress abody againstsaid abutment to given dimensions irrespective of the pressure requiredtherefor.

12. In a press of thecharacter described, a

compression-head comprising an abutment, a feeding-neck and means toheat material supplied thereto, and means to compress a body'againstsaid abutment to given dimensions irrespective of the pressure requiredtherefor.

13. In a press of the character described, a.

compression-head comprising an abutment and a feeding-neck and. means tocompress a 1 5 body against said abutment to given dimensionsirrespective of the pressure required therefor and including a plungerhaving an 15. In a press of the character described, a

compression-head comprising an abutment and a feeding-neck and means tocompress a body against said abutment to given dimensions irrespectiveof the pressure required and including a plunger having an unvaryingrange of movement, and positive fluid-pressure means connected with saidhead and adapted to maintain a maximum uniform pressure throughout thepressing action.

16. In a press of the character described, a

compression-head, a lever opposed thereto, connections between saidlever and said head, and livefluid-pressure means operatively connectedto said lever.

17. In a press of the character described, a compression-head, a leveropposed thereto, connections between said lever and said head,live-fluid-pressure means operatively connected to said lever and aplunger having an unvarying range' of movement and cooperating with saidhead.

18. In a press of the character described, a

head comprising an abutment and a feedingneck, an opposed plunger havingan unvarying range of movement, means to aline said plunger first withsaid neck and then with said abutment, a lever opposed to said head,connections between said lever and said head, and live-fluid-pressuremeans adapted to act upon said lever.

19. In a press of the. character described, a

head comprising an abutment and a feeding neck, an opposed plungerhaving an unvarying range of movement, means to aline said plunger firstwith said neck and then With said abutment, a lever opposed to saidhead, connections between said lever and said head, and means adapted toact upon said lever to maintain a maximum uniform pressure throughoutthe pressing action.

20. A press of the character described containing compression means andpositive fluidpressure-controlling means therefor, said controllingmeans'comprising a cylinder and its contained piston and atrap-discharge for said cylinder.

21. A press of the character described conta ini ng compression me ansand fluid-pressurecontrolling means therefor, said contrpllmg meanscomprising a cylinder and its piston, and means to admit pressure tosaid cylinder said element said lever.

. pressure-fluid means to at one side of the piston open exhaust for theopposite end of said cylinder, and means to admit live pressure to saidopposite end of said cylinder when desired.

22. A press of the character described, comprising means to compress abody normally to given dimensions irrespective of the pressure requiredtherefor controlled means connected therewith and adapted to maintain amaximum uniform pressure throughout the pressing action.

23. Apress of the character described, comprising means to compress abody normally to given dimensions irrespective of the pressure requiredtherefor and positive fluid-pressure-controlled means connectedtherewith and adapted to maintain a maximum uniform pressure throughoutthe pressing action.

24. A press of the character described, comprising a compression memberhaving an unvarying range of movement, and an opposed pressure-receivingelement having a positive fluid-pressure support adapted to maintain amaximum uniform pressure throughout the pressing action. g

25. Apress of the character'described, comprising compression means, apressure-receiving member thereof at one side the press, a fluidpressure-controlled lever at the opposite side of said press anddisconnected from said compression means, and connections between saidp'ressure-receiving member and 26. A press of the character described,comprising compression means, a fulcrum element orming a part thereof,and an opposed connected fluid-pressure-controlled fulcrum element.

27 A press of the character described comprising a movable compressionmember and an opposed, normally stationary pressure-rei rmving element,and constantly-renewed normal position. I

V 28. Apress of the character described, comprising a movablemold-bearing carriage, a movable mold'member reciprocable in saidcarriage, and friction devices controlling the movements of said member.

29. A press of the character described com prising a movablemold-bearing carriage,a

reciprocatory mold element mounted in said carriage, means to move saidmold element positively in onedirection, and means independent thereofcontrolling the movement of in an opposite direction.

30. In a press of the character described a reciprocatory mold-bearingcarriage, means to reciprocate the same, and cushion means to assist thereciprocationsof said carriage.

31. A press of the character described, comrising arectilinearly-r'eciprocable earing carriage,-

therein, normally and positive pressurehold said element in moldmeans toreciprocate the i said carriage to release said-catch means and same, astop member, and springs arranged l to cooperate with opposite faces ofsaid stop member and connected respectively with said i carriage.

32. A press of the character described, com prising a mold-bearingcarriage, a movable i mold member re'ciprocable in and with relation tosaid caniage, means to impart compressing movement to said mold member,means to retract said mold member just sufficiently to release thematerial from pressure, and means to impart ejecting movement to saidmember.

33. A press of the character described, comprising a mold-bearingcarriage, a movable mold member reciprocable in and with relation tosaid carriage, varying range of movement to said member, means justsuficiently to means to impart ej member.

34. A press of the character described, comprising a mold-bearingcarriage, a movable mold member reciprocable in and-with relation tosaid carriage, means to impart com pressing movement to said moldmember, means to retract said mold member just sufficiently to releasethe pressure, a latch to hold said member in said retracted position,and

means to impart an ejecting movement to said member. I

35. A press of the character described, comprising a mold-bearingcarriage, a movable mold member reciprocable in and with relation tosaid carriage, means to impart com pressing movement to said moldmember, means to retract said mold member-just sufficiently to releasethe. ressure, means to engage and hold the mdld member in said retractedposition, means to release said engaging and holding means by thereciprocation of the carriage, and means to impart ejecting movement tosaid mold member.

36. A press of the character described, comprising a mold-bearingcarriage, a mold member movable in and with relation to'said arriage,means to move said member to compress a block, means to impart ejectingmold release the pressure, and ectmg movement to said to retract saidmoldmember means to impart an un the plunger to release the pressureupon the I material prior to the ejecting movement'o said plunger, andmeans controlled by the movement of the carriage to release'the moldmember from said retracted position.

37. A press of the characteridescribed com rising a mold-bearingcarriage, a mold mem- Ber movable in and with riage,

ress a block, means to impart further movement to said member to e ect abloclr, means automatically to catch and hold'said memrelation to saidcarmeans to move said member to .com-

bar between said compressing and ejecting ositions, means controlled bymovement of permit the return of said member, and means to adjust theeffective operation of said catch means, thereby to adjust the positionin which said member is held thereby.

38. A press of the character described com prising a reciprocablerectilinearly-movable mold bearing carriage, a transversely andrectilinearly reciprocable cross-head mounted in said carriage, abox-frame loosely enl l I i box slidably mounted in said box-frame.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

LOUIS N. MCCARTER. Witnesses:

W. B. BEYER, JNo. VVAGNER.

